Carbureter.



N0. 689,004. Patented Dec.. I7, I90.

C. M. KEMP.

C A R B U R E T E E.

. (Applatiun led Dec. 24, 1900.)

(No Model.) 2 Shees-Sheei l.

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Patented Dec. 7, IQQI.

C. M. KEMP.

BRBUEETER.

(Application filed Dec. 24, 1900.)

2 Sheets-Sheet 2 (No Model.)

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NiTEn ASTnTEs i PATENT @Tricia CLARENCE M. KEMP, OF BALTIMORE, MARYLAND.

CAREURETER.

SPEGIFGATION forming part of Letters Eatent No. 689,004, dated December17, 1901.

Application filed December 24, 1900. Serial No. 40,896. (No modell) To[all whom t nte/U concern/.-

Be it known that I, CLARENCE M. KEMP, a citizen of the United States,residing at Baltimore, Maryland, have invented certain new and usefulImprovements in Gas-Machines, of Which the following is a specification.

This invention relates to apparatus for pro ducing gas, and especiallyto that type of gasproducing apparatus in Which the gas is manufacturedfrom the more highly volatile hydrocarbons, such as naphtha commingledwith air, such an admixture of air and volatilized naphtha producing agas which When the constituent elements are correctly andproportionately compounded is well adapted for lighting and heatingpurposes. Some objections, however, have arisen in connection withgas-generating plants of this particular type, chief among which is thedanger from fire resulting from the storage of a supply of naphtha inthe building in which the plant is installed or from the imperfectconstruction and operation of the machines used to mix the air andhydrocarbon and the consequent escape of the liighly-intiammable gasinto the building, and many of the means hitherto adopted for theprevention of explosions and confiagrat-ions have been inadequate toprotect property from fires and satisfy the requirements oflire-insurance underwriters relative to the placing of risks on propertyin which plants of this type are installed, the most stringent rules asto the introduction of naphtha and like oils ot highly Volatile andexplosive nature into insured buildings being enforced by all insurancecompanies. A further objection has been found to exist in the practicaloperation of generators and mixers of the class to which this inventionbelongs owing to the difficulty experienced in producing a gas in whichthe elements are compounded in such proportions as Will give the bestresults, this being due in part to the fact that the demand on the plantis not constant, but varies according to the number of lights to whichgas is being supplied or the Work being performed, and the compoundingof the gas cannot therefore be done according to iixed and uuvaryingproportions, but must vary in accordance with the varying demand.

Unless this prol portioning of the air and naphtha is carefully andscientifically done the quality and supply of gas are not uniform andresult in agas Which is either oversaturated or Weak in quality, andsuch fluctuations occurring as to give imperfect and varying lightingand heating iiames the etliciency ot' the plant is seriously affected.

rlhe apparatus which forms the subjectmatter of the presentinvention hasbeen designed With the object of overcoming the objections noted above,and by practicing the invention as set forth in detail hereinafter alldanger of fire and consequent menace to property Where a gas-generatingplant of this type is installed is eliminated, this being due to thefact that in the present case the inflammable oil is completely isolatedfrom the apparatus and the building in which it is placed and none ofthe volatile oil in liquid form can enter the building or the apparatuscontained therein, but only the enriched air or gaseous mixture passesinto the building and to the burners. Furthermore, the apparatuscompounds the air and hydrocarbon so carefully and completely and insuch exact proportions to the demand that not only will all the liquidbe volatilized, and not merely that which is richest and most highlyvolatile, but it will also be so uuiformly mixed as to give a gas ofconstant quality whether the demand on the plant be great or small, thecontrol cf the air and oil supply being automatic, so that the requisiteproportions are always delivered to the carbureter or mixer, this beingaccomplished by a peculiar and novel construction ofcontrolling-valveand operating mechanism therefor, as Well as the pump operating andcontrolling means, whereby if a full head ot` gas be required thenecessary adjustments and movements of the valve Will be regulated togive such result, While if the demand for gas be slight thecontrolling-valve and its operating parts will reduce the supply ofgasforming constituents proportionately, thus supplying just the amountof gas necessary for immediate consumption and avoiding the danger ofaccumulating an oversupply or the inconvenience of too small a head.

ln the drawings accompanying and form- IOO ing a part of thisspecification is illustrated one form of gas-generating apparatus forcarrying my invention into effect, in Which- Figure 1 is a general Viewof a gas-generating plant, some of the parts being shown in section forclearness of illustration. Fig. 2 is an end view of the pump-motor andthe operating mechanism with so much of the liquid piston-pumps as willillustrate their connections with the operating mechanism. Fig. 3 is adiagrammatic isometric projection of the carbureter to show itsconnections With the pump which delivers the naphtha to it and itsrelation to the stand-pipe from which the oil is drawn. Fig. 4 is anisometric projection showing the novel valve which is employedjto governthe air-ports and its controlling and adjusting means, while Figs. 5, 6,and 7 are plan views of the valve, showing it in its several positionsrelative to the airports.

In the description hereinafter'like numerals indicate like partsin theseveral views.

Referring to Fig. 1, the numeral 1 indicates a naphtha-tank, which maybe of any desired shape or size, this latter depending somewhat on thesize of the plant and the amount of naphtha consumed. Said tank 1 isisolated from the rest of the apparatus and the building in which saidapparatus is installed by being buried in the ground at-a suitable depthand at a distance from the building. The tank 1 is provided with alilling-pipe 2 in its top, through which the supply of naphtha within itmay be replenished, said pipe 2 being provided with a suitable cap orclosure. A feed-pipe 3 leads from the bottom of said tank 1 to astand-pipe 4, which is adapted to hold a small body ot' naphtha forimmediate use in the carbureter. A cut-off valve 5 is provided betweenthe main supply-tank 1y and the stand-pipe 4, by means of which the.feed-pipe 3 may be closed, access to said valve being had through avalve box or casing 6. All the parts thus far described are completelyisolated from the rest of the apparatus andv from the building by beingburied in the ground at a distance therefrom, as shown, so that alldanger of explosions or fire with respect to the main supply of naphthais eliminated. A suction-pipe 7 is provided which enters the top of saidstand-pipe 4 and extends nearly to the bottom of the same, saidsuction-pipe 7 branching at its upper end, as shown in Fig. 3, so astogive two outlets, each of which is provided with check-valves 8 8 toprevent back- Iiow of the naphtha. The said branches of the suction-pipeenter pipes 9 9, rising from vacuum-cylinders or suction-chambers 10 10,which suction-chambers vare connected with pump-cylinders 11 11 by meansot' pipes 12 12. Said suction-chambers 10 10 and their connections arelocated outside of the building and may, if desired, he buried, as arethe tank andstand-pipe described above. The pump-cylinders 11 11 arepreferably placed Within the building, as shown, and theconmeeting-pipes 12 12, preferably of small diameter, pass through thewall of the building, as shown in Fig. 1. In each of said pump-cylindersare arranged reciprocating plungers 13 13,wl1ich are operated bymechanism presently to be described, and below said plungers is placed asmall body of mercury forming a liquid piston, which is forced out ofthe pump-cylinders and into the suction-chambers 10 10 on the descent ofthe plungers and flows back to the pump-cylinders as the plungers rise,the suction-chambers lO 10 being a little higher than the pump-cylinders11 11 to effect this movement of the mercury, this action of the liquidpiston creating` a vacuum and suction in the chambers 10 10, therebydrawing into said suction-chambers'through the branched pipe 7a smallquantity of naphtha from the standpipe 4, the check-valves 8 8preventing backtlow of the naphtha when the mercury rises inthevsuction-chambers on the descent of the plungers 13 13. The saidplungers and the body of mercury controlled thereby are operated inalternation by pump-operating mechanism, to be presently described, sothat the naphtha is drawn from the stand-pipe 4 in a practicallycontinuous supply. The pipes 9 9, which rise from the suction-chambers10 10 and into which the branches of the suctionpipe 7 enter, unite attheir upper ends and form a common feed-pipe 14, which leads to thecarbureter, said pipes 9 Qbeing provided with check-valves 15 15,opening toward the carbureter, so as to prevent any backilow of thenaphtha charge therefrom when the liquid pistons are making theirintake-stroke and drawing a charge from the stand-pipe 4.

The carbureter is preferably made in the form ot a rectangular box orcasing 16, divided by a central partition 17, and said carbureter ispreferably secured to the outside of the building, as shown in Fig. 1.The space on one side of thepartition 17 forms a steam-receptacle tofurnish the heat for the carbureter necessary for the volatilization ofthe naphtha, the steam being supplied from any suitable source-by meansof a pipe 18, a drip-pipe being provid ed in the bottom of the casing 16to carry oit the water of condensap tion. The space on the other side ofthe partition 17 forms the volatilizing and mixing chamber proper, andinto said mixing-chamber'the naphtha-feed pipe 14 leads, as clearlyshown in Figs. 1 and 3. Aupair-supply pipe also enters themixing-chamber in said carbureter 16, and the air and naphtha afterbeing commingled and converted in the usual manner pass from thecarbureter to the burners through an outlet-pipe 21, connecting with thecarbureter 16 at or near its bottom.

The air-supplying and air and naphtha controlling and pumping mechanismwhich form an important feature of the present mechanism and insure theuniform action of the plant, and the unvarying quality of the gas IOOIIO

Y bearing.

furnished will now be described, reference being had particularly toFigs. 1 and 4 to 7, inclusive. A blower 22 is provided, which may be ofany suitable or preferred type, the one shown being an ordinary rotaryblower driven by belting or gearing it. to some prime motor and providedWith the ordinary regulator or blow-off device 23. An air-pipe 24 leadsfrom said blower 22 to a valve-casing 25, which latter is provided withtwo ports 26 27 said port 26 communicating with the air-supply pipe 20,which leads to the carbureter 16, and port 27 connecting With a pipe 20,leading to an air-motor 28, by Which the pump-operating mechanism isactuated, as Will presently be described. Within the casing 25 is asingle slide-valve 29, said valve consisting of a main body portionhaving an offset or wing 29a at one side, so that the valve isapproximately L-shaped, as clearly shown in Figs. 5 to 7, inclusive.Normally the main portion of said valve 29 controls the port-opening 26,while the offset or wing 29a at the side of the main portion controlsthe port 27, the valve occupying the position shown in Fig. 5 relativeto the port-openings. The longitudinal position of the Valve 29 and theopeningof the ports 26 27 is automatically controlled by the followingmeans: Leading from the air-pipe 20, which carries the air-supply to thecarbureter 16, is a branch pipe 30, which enters the bottom of areservoir 31, said reservoir being of the liquidseal bell type, saidpipe 30 entering a compartment 32 at the bottom of the reservoir, whichcompartment is provided with a vertical outlet-pipe which delivers intoa bell 33, placed in a body of liquid in the upper part of the reservoirin a manner similar to the ordinary gasometer, so that pressure of theair within the reservoir will raise the bell 33, and when pressure fallsthe bell Will descend. Mounted in a fixed sleeve or bearing carried bythe valve-casing 25 is a rock-shaft 34, the outer end of which isprovided with a crank-arm 35, which is connected by means of a link 36with the top of the bell 33, so that the rising and falling movements ofsaid bell will through said link and crank-arm rock the said shaft 34 inits The other end of said rock-shaft 34 enters the valve-casing 25 andcarries at this inner end a second crank-arm 37, which engages `lugs 38on the valve 29, so that the rocking movements of said rock-shaft 34 areimparted to said valve 29, such rocking movements being converted into areciprocating motion through the connections just named. The result ofthis construction is that the amount of air passing to the carbureterand to the motor which actuates the pumping mechanism through thelrespective ports 26 27 will be always automatically proportioned to thedemand on the plant, for it is apparent that if the blower is supplyingair in excess of what is required for the carbureter-supply and thepump-motor such excess of air will pass into the reservoir 3l, andraising the bell 33 will through the rock-shaft and its connections movethe valve 29 so asy to re strict the port-openings 26 and 27, andthereby cut down the air passing to said carbureter 16 and saidpump-motor 2S, so that only a sufficient amount of air and naphtha forimmediate needs will be given to the carbureter.

`When the demand on the system increases,

however, pressure Within the reservoir falls, and the bell 33 descendingwill open the Valve, so as to increase the air-supply, and consequentlythe output of the plant. v

In order that the size of the port-opening which leads to the air-motor28 may be varied to suit varying conditions, means for a sidewiseadjustment of the valve 29 are provided, such means consisting of acranked shaft 39, having its bearings in the side of the valvecasing 25.The cranked portion of the said shaft 39 engages lugs 40 on the saidvalve, so that when the shaft 39 is rotated in its bearings the valve 29will be moved sidewise or at right angles. to its other line of movementwithin the casing 25, and the offset or Wing 29, which normally controlsthe port 27, will be so positioned relative to the said port as todiminish or increase the active area of the said port. In Fig. 5 thevalve 29 is shown in its normal position, and reciprocation of the valve29 through the automatic valve-operating means described above will openboth ports 26 27 for their full width. Movement of the cranked shaft 39will throw the valve 29 to the position shown in Fig. 6, in whichposition the active area of port 27 is diminished, so that reciprocationof the valve 29 will uncover only a part of the full Width of port 27. Afurther movement of said shaft 39 will result in covering the port 27with the main body portion of the valve 29, as shown in Fig. 7, in whichposition both ports 26 27 will be controlled by the body portion of thevalve 29 and the function of the offset or wing 29n will for the timebeing being intermitted. The cranked shaft 39 is provided with a handle40 outside the casing 25, by means of which it may be turned and thevalve 29 adjusted, and a pointer or finger 4l on the shaft serves toindicate on an index 42 on the side of the valve-casing the severaladjustments and exact position of valve 29 relative to port 27. By thisconstruction the valve 29 may be adjusted to give the exact proportionsof air for the carbureter and the pump-motor which maybe desired, sothat by the use of this adjusting means and the automaticvalve-controlling means described hereinbefore a gas of uniform anddeterminate quality may be produced in volumes equal to the immediatedemand on the plant.

The pump-motor 28 and its operating parts and pump connections will nowbe described, reference being had particularly to Fig. 2, in whichligure the construction is best shown. The motor 28, as shown, is of theordinaryrotary type, mounted on suitable supports andhavingacentraldriving-shaft43, on the outer end of which is fixed acam-wheel 53, provided IOO IIO

tions.

with a rim that is formed, as shown, to present cam-faces 54. Engagingthe inner and outer faces of said cam-ring are two antifriction-rollers55, that are carried on the free end of an arm 57, the otherend of saidarm being pivoted to the base, and pivotally attached to the upper endof arm 57 is a link or bar 58, the other end of said bar 56 having asleeve 57a pivotally attached thereto, said sleeve being adj ustablyfixed by a set-screw on a segment-shaped rocker-arm 58, having itsfulcrum on the shaft 43. The lower end of the rocker-arm 58 is forked,as at 59, and straddles an antifriction-roller 60, journaled on aswinging link 6l, intermediate the ends of the latter. The opposite endsof the link 61 are respectively pivotally connected to one end of abell-crank lever, being connected by pitman 63 to the pump-plungers 13.The

`said bell-crank levers 62 are each pivotcd at 62a to the frames orbracket 62", as shown in Fig. 2. It will be readily understood that asthe cam-wheel revolves with the motor 28 it will communicate anoscillating movement to the arms 56, 57, [and 58 and through the mediumot' the swinging link 61 and the bellcrank levers and .pitmen willreciprocate the pump-plungers alternately in opposite direc- Byadjusting the link on the rockerarm 58 toward or from the fulcrum of thelatter the length of the stroke of the pump-plungers may manifestly bealtered.

All of the parts above described are housed Within the building, and asthe naphtha does not enter such portion of the apparatus immunity frolnfire or explosion results. .A lirecheek 64 is preferably placed in thegas-supply pipe at its point of entrance into the building (see Fig. 1)to prevent iiring back to the carbureter 16 and the storage-tank 1 ifafire should occur in the building in which the plant is installed Theoperation of the apparatus having been set forth in connection with thedescription of the various parts,it is deemed unnecessary to recite atlength the action of the plant.

Brie'liy stated, that action is as follows: Air passing from the blo-wer22 enters the valvecasing 25 and passing out of ports 26 27 in volumesregulated by the valve 25 enters pipes 2O 20"L and passes to thecarbureter 16 and the air-motor 28, respectively, excess of air passingto the reservoir 31 by means of 'the branch pipe 30 and through themedium of the bell 33 and its connections controlling the valve 25 andthe area of ports 26 27. The air passing to the motor 28 drives thepumps 11 11 by means of the connections described at a speedproportioned to the demand on the plant, and the exact amount of naphthais drawn from the stand-pipe 4t and injected into the carbureter 16, theair for the carbureter -being likewise regulated in volume to give anaccurately and properly proportioned mixture.

Having thus described my invention, what vI claim as new isl. In agas-generating apparatus, the combination with a carbureter,of ahydrocarbonstorage tank, a pump to deliver the hydrocarbon from saidtank to said carbureter, an air-motor to operate said pump, a blower todeliver air to said motor and to said carbureter, valve-controlled portsfor the air-supply for the motor and for the carbureter, and meansfor-varying the port-openings to increase-or diminish the air-supply tosaid motor and carbureter.

2. In a gas-generating apparatus, the combination with a carbureter,of ahydrocarbonstorage tank, a pump to deliver hydrocarbon from said tank tosaid carbureter, an air-motor to operate said pump, a blower to deliverair to said motor and to said curbureter, valve-controlled ports for theair-supply for the motor and for the carbureter, and automatic means forvarying the port-openings to increase or diminish the air-supply to saidmotor and carbureter.

3. In a gas-generating apparatus, the combination with a carbureter,of ahydrocarbonstorage tank, a pump to deliver the hydrocarbon from saidtank to said carbureter, an air-motor to operate said pump, a blower todeliver air to said motor and to said carbureter, a single valvecontrolling both the airsupply for the lnotor and for the carbureter,and means for varying the position of said valve to increase or diminishthe air-supply to said motor and carbureter.

4E. In a gas-generating apparatus, the combination with a carbureter, ofa hydrocarbonstorage tank, a pump to deliver hydrocarbon from said tankto said carbureter, an air-motor to operate said pump, a blower todeliver air to said motor and to said carbureter, a single valvecontrolling both the air-supply for the motor and for the carbureter,and automatic means for varying the position of said valve to increaseor diminish the air-supply to said motor and carbureter,

5. In a gas-generating apparatus, the combination with a carbureter, ofa hydrocarbonstorage tank, a pump to deliver hydrocarbon from said tankto said carbureter,v an air-motor to operate said pump, a blower todeliver air to said motorand to said carbureter, valvecontrolled portsfor the air-supply for the motor and for the carbureter, means forautomatically varying the port-openings to increase or diminish thesupply of air to said motor and carbureter, and means for adjusting theport-controlling means to limit the supply of air passing to said motor.

6. In a gas-generating apparatus, the combination with a carbureter, ofa hydrocarbonstorage tank, a pump to deliver hydrocarbon from saidA tankto said carbureter, an air-motor to operate said pump, a blower, a valvebox or casin g into which said blower delivers, said valve-box beingprovided with two ports, a pipe connecting one of said ports with thecarbureter, a second pipe connecting the other of said ports with saidair-motor, means for IOO IIO

IZO

controlling said ports, and means for varying the port-openingsautomatically to increase or diminish the supply of air passing throughthe said ports. v

7. In a gas-generating apparatus, the combination with a carbureter, ofa hydrocarbonstorage tank, a pump to deliver hydrocarbon from said tankto said carbureter, an air-1n otor to operate said pump, a blower, avalve box or casing into which the said blower delivers, said Valve-boxbeing provided with two ports, a pipe connecting one of said ports withthe carbureter, a second pipe connecting the other of said ports withsaid air-motor, means for controlling said ports, means for varying theport-openings automatically to increase or diminish the supply of airpassing through said ports, and-means for adjusting saidport-controlling means to vary the active area of the port leading tosaid airmotor. l

8. In a gas-generating apparatus, the combination with a carbureter, ofa hydrocarbonstorage tank, a pump to deliver hydrocarbon from said tankto said carbu reter, an air-motor to operate said pump, a blower, avalve box or casing into which said blower delivers, said valve-boxbeing provided with two ports, a pipe connecting one of said ports withthe carbureter, a second pipe connecting the other of said ports withthe air-motor, means for controlling said ports, and means actuated bythe volume of ail` passing through one of said ports to automaticallyvary said port-openings and increase or diminish the air-supply to saidmotor and said carbureter.

9. In a gas-generating apparatus, the coinbination with a carbu reter,of a hydrocarbonstorage tank, a pump to deliver'hydrocarbon from saidtank to said carbureter, an air-motor to operate said pump, a blower, avalve box or casing into which said blower delivers, said valve-boxbeing provided with two ports, a pipe connecting one of said ports withthe carbureter, asecond pipe connecting the other of said ports with theair-motor, means for controlling said ports, means actuated by thevolume of air passing through one of said ports to automatically varysaid port-openings and increase or diminish the air-supply to said motorand said carbureter, and manually-operated means for adjusting saidportcontrolling means to vary the active area of the port leading tosaid air-motor.

l0. In agas-generating apparatus, the combination with a carbureter, ofa hydrocarbonstorage tank, a pump to deliver hydrocarbon from said tankto said carbureter, an air-motor to operate said pump, a blower, avalve-casing into which said blower delivers, an airsupply pipeconnecting said Valve-box with said carbureter, a second pipe connectingsaid valve-box with said air-motor, means in said valve-box controllingthe port-openings to said air-supply pipes, an air-reservoir connectedwith one of said air-supply pipes, a 1isingand-falling liquid-seal bellin said resfrom said tank to said carb ureter, an air-motor to operatesaid pump, a blower, a valve-casing into which said blower delivers, anairsupply pipe connecting said valve-box with said carbureter, asecondpipe connecting said valve-box with said air-motor, means in saidvalve-box controlling the port-openings to said air-supply pipes, anair-reservoir connected with the carbureter air-supply pipe, arising-and-falling liquid-seal bell in said reservoir, and connectionsbetween said risingand -falling bell and said port-controlling means,whereby the position of the latter is varied and the port-openingsincreased or diminished by the air-pressure within the bell, and meansfor manually adjusting said portcontrolling means to vary the activearea of the port leading to said air-motor.

12. In a gas-generatin g apparatus, the combination with a carbureter,of a hydrocarbonstorage tank, a liquid piston-pump to deliverhydrocarbon from said tank to said carbureter,an air-m otorto operatesaid liquid pistonpump, a blower, a valve-box into which said blowerdelivers, an air-supply pipe leading from said valve-box to said carbureter, a second pipe connecting said valve-box and said air-motor, meanscontrolling the port-openings to said supply-pipes, an air-reservoirconnected with said carbureter air-supply pipe, a rising-and-fallingliquid-seal bell in said reservoir, a rock-shaft operatively connectedwith said rising-and-falling bell, and connections between saidrock-shaft and said port-controlling means, whereby the position of thelatter is varied and the port-openings increased or diminished by theair-pressure within said bell.

13. In a gas-generating apparatus, the combin ation with a carbureter,of a hydrocarbonstorage tank, a liquid piston-pump to deliverhydrocarbon from said tank to said carbureter, a blower, a valve-boxinto which said blower delivers, an air-supply pipe leading from saidValve-box to said carbureter, a second pipe connecting said valve-boxand said air-motor, means controlling the port-openings to said supply-pipes, an air-reservoir connected with said carbureter air-supplypipe, a rising-and-falling liquid-seal bell in said reservoir, arock-shaft mounted in said valvebox and operatively connected with saidrising-and-falling bell, connections between said rock-shaft and saidport-controlling means, whereby the position of the latter is varied andthe port-openings increased or diminished by the air-pressure withinsaid bell, means for manually adjusting said port-controlling means tovary the active area of the IIO port-opening leading to the air-motor,and an indicating device to show the adjustment of the port-controllingmeans relative to the said motor supply-port.

14. In a gas-generating apparatus, the combination with a carbu reter,of a hydrocarbonstorage tank, a liquid piston-pump to deliver thehydrocarbon from said tank to said carbureter, an air-motor to operatesaid pump, an air-supply, pipes connecting said carbureter and saidair-motor with said air-supply, an L-shaped valve controlling theport-openings of both supply-pipes, and means actuated by theair-pressure in the said carbureter supply-pipe to vary the position ot`said L-shaped Valve and increase or diminish the port-openings.

15.- In agas-generating apparatus, the coinbination with a earbureter,ot' a hydrocarbonstorage tank, a liquid piston-pump to deliver thehydrocarbon from said tank to said carbureter, an air-motor foroperating said pump, an air-supply, pipes connecting said motor and saidcarbureter with said air-supply, a valve controlling the port-opening tosaid carbureter supply-pipe, an oftsetl or wing on said valvecontrolling the port-opening to said. motor supply-pipe, means forautomatically varying the position ot said valve to increase or diminishthe port-openings, and means for adjusting said valve to vary the activearea of said motor supply-port.

16. In a gas-generating apparatus, the combination with a carbureter anda hydrocarbon-storage tank, of a blower to supply air to saidcarbureter, an air-motor connected with and driven by said blower, aliquid pistonpurnp having two pumping-cylinders to deliver hydrocarbonfrom said tank to said carbureter, plungers in said pumping-cylinders, acam on said air-motor shaft, and connections between said cam and saidpump-plungers to reciprocate the latter alternately.

`and. driven by said blower, a liquid pistonpump having twopumping-cylinders to deliver hydrocarbon from said tank to saidcarbureter, reciprocating plungers in said cylinders, a cam on theair-motor shaft, an oscillating bar pivota-lly mounted on suitableVsupports and oscillated by said cam, and connections between said barand said reciprocating plungers, whereby said plungers are reciprocatedalternately.

18. In a gas-generating apparatus, the combination with a carbureter anda hydrocarbon-storage tank,of a liquid piston-pump having twopumping-cylinders to deliver hydrocarbon from said tank to saidcarbureter, reciprocating plungcrs in said pumping-cylinders, a blowerto supply air to said carbureter, an air-motor connected with and drivenby said blower, a cam on said air-motor shaft, a lever pivoted at oneend and engaging said cam at its other end, a rocker-arm operativelyconnected with said lever, an oscillating bar connected with andreciprocated by said rocker-arm, and connections between saidoscillating bar and said reciprocating plungers, whereby said plungersare reciprocated alternately.

19. In a gas-generating apparatus, the coinbination with a carbureterand a hydrocarbon-storage tan k,of a liquid piston-puinphaving twopumping-cylinders to deliver hydrocarbon from said tank to saidcarbureter, a blower to supply air to said oarbureter, an air-motorconnected with and driven by said blower, a cam on said air-motor shaft,a lever pivoted at one end and engaging said cam at its other end, arocker-arm operatively and adjustably connected with said lever, anoscillating bar connected with and reciproeated by said rocker-arm, andconnections between said oscillating bar and said reciprocatingplungers, whereby said plungers are reciprocated alternately.

20. Ina gas-generating apparatus, the combination with a carbureter anda hydrocarbon-storage tank,of aliquid pistonpump having twopumping-cylinders to deliver hydrocarbon from said tank to saidcarbureter, reciprocating plungers in said pumping-cylinders, a blowerto supply air to said carbureter, a earn on theair-motor shaft, a leverpivoted to a suitable support and engaging said cani, a rocker-arm,adjustable connections between said cam-operated lever and said rocker-arm,an oscillating har connected with and reciprocated by said rocker-arm,and bell-crank levers connecting said bar with said pumpplungers,whereby reciprocation of said bar will move said plungers alternately.

In testimony whereof I have hereunto set my hand in presence of twosubscribing witnesses.

CLARENCE M. KEMP.

, Witnesses:

JOHN S. COLE, CHARLES I. PUMELL.

